WASHINGTON — A provision in the new 9/11 health bill may be adding insult to injury for people who fell sick after their service in the aftermath of the 2001 Al Qaeda attacks, The Huffington Post has learned.

The tens of thousands of cops, firefighters, construction workers and others who survived the worst terrorist assault in U.S. history and risked their lives in its wake will soon be informed that their names must be run through the FBI’s terrorism watch list, according to a letter obtained by HuffPost.

Any of the responders who are not compared to the database of suspected terrorists would be barred from getting treatment for the numerous, worsening ailments that the James Zadroga 9/11 Health And Compensation Law was passed to address.

It’s a requirement that was tacked onto the law during the bitter debates over it last year.

The letter from Dr. John Howard, director of the National Institute for Occupational Safety and Health, informs medical providers and administrators that they should begin letting patients know before the new program kicks in this July.